GDG1 5X20MM Fuse 250V 1A Equivalent & Substitute Parts

Part Overview

The GDG1 is a 5X20MM fuse rated at 250V, 1A, manufactured by Mersen USA Newburyport-MA L.L.C. This cartridge fuse is designed for circuit protection in applications requiring slow-blow response characteristics. The part is currently active in production with ROHS3 compliance. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and performance characteristics align with the original specification, enabling direct replacement in compatible holder assemblies.

Substiute Parts

GDG1

Mersen USA Newburyport-MA L.L.C.In Stock: 1073GDG1 Datasheet

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0218001.HXP

Littelfuse Inc.In Stock: 63050218001.HXP Datasheet

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0218001.MXP

Littelfuse Inc.In Stock: 179530218001.MXP Datasheet

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0218001.TXP

Littelfuse Inc.In Stock: 7870218001.TXP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the GDG1 are qualified based on the following electrical and mechanical parameters:

• Current Rating: 1 A (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Package / Case: 5mm x 20mm (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Slow Blow (exact match required)
• Mounting Type: Requires Holder (compatible with GDG1 holder assemblies)
• RoHS Status: ROHS3 Compliant (regulatory alignment)
• Product Status: Active (current production availability)

All three substitute parts meet these criteria and are manufactured by Littelfuse Inc., Series 218. They are electrically and mechanically interchangeable with the GDG1 within compatible fuse holder assemblies.

Parameter Comparison

Engineering Selection Recommendations

All three Littelfuse 218 series substitutes (0218001.HXP, 0218001.MXP, 0218001.TXP) are qualified replacements for the GDG1 based on matching electrical ratings, mechanical dimensions, and fuse characteristics. Selection among the three substitutes may be based on packaging availability and inventory levels:

• 0218001.MXP: 17,900 pcs in stock (highest availability)
• 0218001.HXP: 6,258 pcs in stock
• 0218001.TXP: 772 pcs in stock (limited availability)

All substitutes maintain ROHS3 compliance and active product status. The 0218001.TXP variant includes KC approval in addition to the standard certifications (CCC, CE, CSA, K-MARK, PSE, SEMKO, UL, VDE) present in the other variants.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 218 series fuses replace the GDG1 in existing applications?

A: Yes. The 0218001.HXP, 0218001.MXP, and 0218001.TXP are direct electrical and mechanical equivalents. They share identical current ratings (1 A), voltage ratings (250 V AC), package dimensions (5mm x 20mm), fuse type (Cartridge, Glass), and response characteristics (Slow Blow). Installation requires the same holder assembly as the GDG1.

Q: What are the key parameters that determine substitutability?

A: Current rating, voltage rating, package dimensions, fuse type, and response time must match exactly. All three Littelfuse substitutes meet these criteria. Additional parameters such as breaking capacity, melting I²t, and operating temperature range are consistent across all qualified substitutes.

Q: Are there differences between the three Littelfuse substitute part numbers?

A: The three variants (0218001.HXP, 0218001.MXP, 0218001.TXP) are electrically and mechanically identical. The primary differences are packaging format (Bulk for all three) and regulatory approvals. The 0218001.TXP includes KC approval. Inventory availability differs among the three variants.

Q: What compliance standards apply to these fuses?

A: All substitutes are ROHS3 compliant and REACH unaffected. Approval agencies include CCC, CE, CSA, K-MARK, PSE, SEMKO, UL, and VDE. The 0218001.TXP additionally includes KC approval.

Q: Can these fuses be used in AC and DC applications?

A: The specifications indicate 250 V AC rating. DC application compatibility is not specified in the provided parameters and must be verified against the specific application requirements and holder assembly design.